Represents Nth occurrence (or all occurrences) of the specified day of the week.

For a list of all members of this type, see ByDay Members.

System.Object
   Aspose.iCalendar.ByDay

Remarks

Corresponds to one day of the week specified in the BYDAY part of a recurrence rule.

Can be used in a monthly or yearly recurrence rule to specify Nth occurrence (or all occurrences) of the specified day of the week in a month or year.

BYDAY=MO represents all Mondays of the month or year. To represent all occurrences, set NthOccurrence to 0.

BYDAY=2MO represents 2nd Monday in a month or year.

BYDAY=-1MO represents the last Monday of a month or year.

Example

Weekly on Tuesday and Thursday for 5 weeks:

[C#]

//Create the pattern programmatically.
RecurrencePattern pattern = new RecurrencePattern();
pattern.StartDate = new DateTime(1997, 9, 2, 9, 0, 0);
RecurrenceRule rule = pattern.RRules.Add();
rule.Frequency = Frequency.Weekly;
rule.Until = new DateTime(1997, 10, 7);
rule.ByDay.Add(new ByDay(DayOfWeek.Tuesday));
rule.ByDay.Add(new ByDay(DayOfWeek.Thursday));

DateCollection dates = pattern.GenerateOccurrences();

foreach (DateTime d in dates)
    Console.WriteLine(d);

...

//Create the pattern from iCalendar string.
RecurrencePattern pattern = new RecurrencePattern(
    "DTSTART;TZID=US-Eastern:19970902T090000\n" +
    "RRULE:FREQ=WEEKLY;UNTIL=19971007T000000Z;WKST=SU;BYDAY=TU,TH");

DateCollection dates = pattern.GenerateOccurrences();

foreach (DateTime d in dates)
    Console.WriteLine(d);

[VB]

'Create the pattern programmatically.
Dim pattern As RecurrencePattern = New RecurrencePattern
pattern.StartDate = New DateTime(1997, 9, 2, 9, 0, 0)
Dim rule As RecurrenceRule = pattern.RRules.Add()
rule.Frequency = Frequency.Weekly
rule.Until = New DateTime(1997, 10, 7)
rule.ByDay.Add(New ByDay(DayOfWeek.Tuesday))
rule.ByDay.Add(New ByDay(DayOfWeek.Thursday))

Dim dates As DateCollection = pattern.GenerateOccurrences()

For Each d As DateTime In dates
    Console.WriteLine(d)
Next

...

'Create the pattern from iCalendar string.
Dim pattern As RecurrencePattern = New RecurrencePattern( _
    "DTSTART;TZID=US-Eastern:19970902T090000" + ControlChars.CrLf + _
    "RRULE:FREQ=WEEKLY;UNTIL=19971007T000000Z;WKST=SU;BYDAY=TU,TH")

Dim dates As DateCollection = pattern.GenerateOccurrences()

For Each d As DateTime In dates
    Console.WriteLine(d)
Next

Requirements

Namespace: Aspose.iCalendar

Assembly: Aspose.iCalendar (in Aspose.iCalendar.dll)

See Also

ByDay Members | Aspose.iCalendar Namespace | ByDayCollection